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Halogen-free phosphorus-based flame retardant offering excellent fire safety performance without releasing toxic halogenated smoke.
High thermal stability suitable for processing temperatures up to 280 °C, ensuring compatibility with demanding polymer compounding operations.
Low volatility and minimal migration, providing long-term flame-retardant efficacy in finished articles.
Good compatibility with polyolefins, engineering plastics (e.g., PP, PE, PA6), and thermoplastic elastomers.
Meets stringent environmental and regulatory requirements including RoHS, REACH SVHC-free status, and UL 94 V-0 (at appropriate loading).
Flame-retarded polypropylene (PP) for automotive interior components such as dashboards and trim parts.
Wire and cable jacketing compounds requiring low-smoke, zero-halogen (LSZH) performance.
Electrical enclosures and housings for consumer electronics and industrial equipment.
Fire-safe building materials including insulation sheathing and conduit systems.
Flame-retardant masterbatches for injection-molded technical parts in public transport interiors.
| Chemical Type | Organophosphorus compound (phosphinate-based) |
| Product Form | Free-flowing white granular solid |
| Appearance | Off-white to light beige granules |
| Density (23 °C) | 1.55–1.60 g/cm³ |
| Melting Range | 275–285 °C (DSC, heating rate 10 °C/min) |
| Moisture Content | ≤ 0.15 wt% (by Karl Fischer titration) |
| Thermal Decomposition Onset (TGA, N₂, 10 °C/min) | ≥ 320 °C |
| Key Regulatory Compliance | REACH registered; RoHS compliant; No SCCPs or PVC plasticizers |
Q1: What types of polymer systems is VIAPAL ADDITOL P791 compatible with?
A: VIAPAL ADDITOL P791 is designed for use in thermoplastic and thermoset systems, including polyolefins, engineering plastics, and unsaturated polyester resins. It demonstrates good compatibility and dispersion stability in non-polar to moderately polar matrices.
Q2: How does VIAPAL ADDITOL P791 achieve flame retardancy?
A: It functions primarily through a condensed-phase mechanism—promoting char formation and reducing the release of flammable volatiles during thermal decomposition. Its performance is enhanced when combined with synergists such as metal oxides or nitrogen-based co-additives.
Q3: Is VIAPAL ADDITOL P791 suitable for applications requiring low smoke and low toxicity?
A: Yes—it is a halogen-free flame retardant formulated to support reduced smoke density and lower generation of corrosive or toxic gases during combustion, aligning with evolving safety and environmental expectations for indoor and transportation applications.
Q4: What processing methods are recommended for incorporating VIAPAL ADDITOL P791 into formulations?
A: It can be effectively incorporated via standard melt compounding techniques such as twin-screw extrusion or high-speed mixing. Pre-blending with carrier resins or masterbatching is often used to ensure uniform distribution and minimize dust handling.
Q5: Does VIAPAL ADDITOL P791 affect the mechanical properties of the final compound?
A: When properly dispersed and dosed, it generally maintains acceptable balance between flame retardancy and mechanical integrity. However, excessive loading may influence impact strength or elongation; optimization is advised based on end-use performance requirements.
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E-mail: wangxingqiang@ericwchem.com
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